For each 3 Refining level s of Golden Wrench:
Increases damage Power Swing a 7%.
Increases damage Axe Boomerang a 5%.
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For each 3 Refining level s of Engine Pilebunker:
Increases damage Boost Knuckle a 7%.
Increases damage Arms Cannon a 5%.
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For each 3 Refining level s of Maxi Spanner:
Increases damage Axe Tornado a 7%.
Decreases physical and magical damage done a all monsters of size a 5%.